http://bugs.winehq.org/show_bug.cgi?id=33845
--- Comment #15 from keinname234567@web.de 2013-11-07 06:53:38 CST --- (In reply to comment #14)
There is a workaround : Start the Launcher and let patching fail. Then get into the folder shown in the bug report. There should now be a Launcher.exe.tmp Replace the Launcher.exe with the Launcher.exe.tmp After that, the actual game patch will be downloaded.
What I forgot to mention : (close the launcher before you replace the file and then start it again)